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Showing 1 to 20 of 40 for “"RAPID SOLIDIFICATION"”.
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Rapid solidification of zinc based alloys
… alloys for the joining of copper produced by the rapid solidification technique; the study of the development of microstructures in rapidly solidified dilute zinc alloys. A new model has been proposed, based on the present experimental results and the available data from the literature, to account …
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Rapid Solidification Processing of High Temperature and Reactive Alloys
… temperature and reactive metal alloys through rapid solidification processing (RSP). An empirical approach has been used to develop these processes. Several unique configurations of melting and quenching have been evaluated. Induction, DC-arc and plasma have been considered for initial melting …
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Undercooling and rapid solidification of Fe-Cr-Ni ternary alloys
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1994.
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Rapid solidification processing of titanium-copper alloys containing rare earth additions
Restriction data tranferred 2014-07-01T11:19:31-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission
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Rapid solidification of oxides : ZrO2-containing ceramics and high Tc̳ superconductors
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1988.
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The kinetics of growth competition during rapid solidification of ternary steel alloys
The rapid solidification growth behavior of ternary stainless steel alloys was examined using electromagnetic levitation and high-speed digital imaging, and the growth behavior of the stable fee austenite (gamma) phase into the pre-existing metastable bee ferrite [delta] solid/liquid dendrite array …
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Rapid solidification processing and oxidation of fine grained Fe-Cr-Al alloys
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1989.
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Aluminum Beryllium Composites Produced by Rapid Solidification (Metastable Equilibrium, Modulus Hardening, Liquid Immiscibility)
… alloys, 4.4-20 at.% Be in composition, have been rapidly solidified by laser surface remelting and melt-spinning. Microstructures of uniform dispersions of spherical Be particles (10-15 nm in diameter), randomly dispersed in an Al matrix were produced for compositions 5-8 at.% Be. Two crystal …
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The Formation of Dispersions of Rare Earth Oxides in Titanium Alloys Using Rapid Solidification Processing
Embargo set by: Seth Robbins for item 71977 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs
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Rapid Solidification of Alloy Substrates by Lasers and Electron Beams: Heat Flow Modelling and Solidification Morphology
… and experimental study is described for the rapid melting and solidification of pure aluminum and aluminum copper alloy substrates subjected to a high intensity heat flux. The problems addressed are for stationary or moving heat fluxes absorbed through a circular region on the bounding …
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Dynamic Compaction of Rapidly Solidified Nickel-Base Superalloys (Rapid Solidification, Powder Metallurgy, Hot Isostatic Pressing, Consolidation, Precipitation)
Rapid solidification of an experimental nickel-base superalloy was achieved using centrifugal atomization, chill-block melt-spinning and laser surface melting. Transmission electron microscopy was utilized to characterize the various microstructures obtained in terms of growth morphology, …
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Rapid Solidification and Undercooling of Aluminum-Germanium Alloys: Characterization and Control of Microstructure (Metastability, Metallic Glass, Electron Microscopy)
… development of Al-Ge alloys during rapid solidification has been carried out. A new technique has been developed which allows for such determinations to be performed directly in a transmission electron microscope. This technique involves the in-situ melting and solidification of …
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A Study of Reduced Chromium Content in A Nickel-Base Superalloy via Element Substitution and Rapid Solidification Processing
… superalloy via element substitution and rapid solidification processing was performed. The base alloy studied was a commercial nickel-based superalloy, 713LC, which was developed by the INCO family of companies. The two elements used as partial substitutes for chromium were Si and Zr.
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Evolution of structure and electrical properties during crystallization of rapidly solidified bismuth(4)titanium(3)oxygen(12)
… Bi$\sb4$Ti$\sb3$O$\sb{12}$ was prepared by rapid solidification from the melt. Crystallization and microstructure development during heat treatment were investigated. Dielectric and ferroelectric properties were related to microstructure.
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Chemical processing of lead metatitanate by co-precipitation and sol-gel methods: The role of powder and gel characteristics on crystallization behavior
… type of amorphous PbTiO$\sb3$ prepared by rapid solidification. This comparison led to the identification of material parameters which aided in crystallization.
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Defect and deformation studies in transition metal trialuminide compounds
… Test materials were prepared via the rapid solidification route. TEM characterizations indicated that the microstructure of the asatomized Al-25at.%Ti alloy powder consisted of primary dendrites of the $\rm Al\sb3Ti$ phase (DO$\sb{22}$ structure) and $\alpha$-aluminum. The as-atomized …
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Development of multi-component iron-based amorphous alloy
… which is capable of forming a metallic glass on rapid solidification of the melt, rather than modifying a known glass forming composition, and assessing its glass forming ability. Iron (Fe) was chosen as the solvent element because it is significantly cheaper than the base elements found in some …
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Novel Synthesis and Characterization of Uranium-Zirconium Carbonitride by Direct Casting
… temperature of the major constituents and rapid solidification. Additional energy dispersive x-ray spectroscopy, combustion analysis, and inert gas fusion analysis proved that the core regions have both uranium and zirconium and establish that carbon and nitrogen are retained during the …
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A Microstructural Characterization of as-Cast and Rapidly Solidified Titanium-Silicon Alloys (Silicide, Melt-Spinning, Precipitation, Metastable, Oxygen)
Rapid Solidification (RS) studies have been carried out on a number of Titanium-Silicon alloys. Two techniques have been employed to produce rapidly solidified material, namely laser surface melting and melt-spinning. Prior to RS, a careful microstructural characterization of the as-cast material …
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In situ composites of compatibilized polypropylene/liquid crystalline polymer blends
… of these blends found that heat transfer and solidification significantly affected the flexural modulus of these blends. Injection molding conditions such as fill time, mold thickness, mold temperature and melt temperature were investigated in three molds of different thicknesses. Different …
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